85results about How to "Improve wind utilization" patented technology

The invention discloses a multilayer stacking combined vertical type wind power generation system, which comprises multi-section combined crankshafts, multilayer stacking combined vertical type wind power systems and a multilayer stacking combined type frame, wherein each layer of wind power system has a box frame structure and comprises a fan blade system, a wind collection and protection system, a double-speed increasing device and a multi-winding electrode variation generator system; each layer of wind power system individually forms an independent wind power system for operation or all layers of wind power systems are fixed together by vertical posts at all corners; a detachable combined coupling is used for connecting all layers of fan blade crankshafts into a whole, so that synchronous turning moment can be generated by each layer of fan blades; and the lower shaft end of a fan blade crankshaft on the lowermost layer of the multilayer wind power system is connected with the double-speed increasing device and the multi-winding electrode variation generator system together through the detachable combined coupling. In the invention, the wind power generation system is decomposed into a plurality of layers of combined structures, is convenient to manufacture, transport, mount, assemble and maintain, has a small volume and high performance and can form a high-capacity power generation system.

The invention provides a vector arc stage switching method and device for double rotary balance mass-based dynamic magnetic steel type magnetic levitation workpiece stages, and belongs to a semiconductor manufacturing equipment technology. The device comprises a support frame, a balance mass block, a rotating shaft, magnetic levitation workpiece stages, a workpiece stage measurement device and a workpiece stage drive device, wherein the two workpiece stages work between a measurement station and an exposure station; the positions of the workpiece stages are measured by plane gratings; the workpiece stages are driven by magnetic levitation planar motors; and the two workpiece stages are driven by the planar motors to achieve single-beat arc fast stage switching in the double workpiece stage switching process. According to the vector arc stage switching method and device, the problems that an existing stage switching scheme has multiple beats, a long track, multiple starting and stopping beats, long stabilization time and the like are solved; the stage switching link is reduced; the stage switching time is shortened; and the productivity of a lithography machine is improved.

The invention discloses a speed-regulation synchronous motor assembling unit which comprises a synchronous motor and a controller, wherein the synchronous motor comprises a rotor and a stator; a stator coil is connected to an external power grid for outputting or receiving the electric energy; a rotor coil is connected to the controller after being led out in a conventional manner; the input of the controller is connected with the power grid. The speed-regulation synchronous motor assembling unit is characterized in that the rotor comprises two excitation coils; two rotor coils are arranged at the distance of electrical angle alpha in space; two alternating current exciting voltages are output by the controller to be respectively connected with the two rotor coils so as to form two alternating current exciting currents; the phase difference of the two alternating current exciting currents is (pi-alpha), and the angular frequencies are shown by the following formula: omega f=omega s- omega m (omega s represents power grid angular frequency, and omega m represents the electric angle speed of the rotor; a rotating magnetic field is formed by the two alternating current exciting currents; and the rotating speed of the rotating magnetic field, relative to the rotating speed of the stator, is synchronous speed omega s. The speed-regulation synchronous motor assembling unit provided by the invention has wide speed regulation range, and can be used as a wind power generator, thereby broadening the wind adapting range, abolishing a speed raising gear case and improving the wind energy utilization rate.

The invention discloses a control system of a wind driven generator. The control system comprises a main controller which is connected with a generator and a storage battery respectively, and is characterized in that: the main controller comprises a rectifying device, a pulse width modulation device and a control device, wherein the rectifying device is connected with an output end of the generator; the pulse width modulation device is connected with an output end of the rectifying device; and the main controller also comprises an inverter connected between the generator and the storage battery. Through the invention, the requirement on wind speed for generator start is low, electric energy can be output under a relatively low wind speed, and the utilization rate of wind power is high; the power control on the wind driven generator is optimized, and the generator efficiency is high; the power supply of the controller is stable and power failure caused by undervoltage of the storage battery is avoided so that the controller works more stably and the reliability is high; and an electromotor does not need to be added for auxiliary start, the cost is low, and the operation is reliable.

The invention discloses a high-altitude tower embedded type vertical type wind power generation system which comprises a high-altitude tower, a global position system (GPS) time service generator excitation grid-connection control system and a vertical type wind power generation system. The vertical type wind power generation system is arranged on the high-altitude tower, a GPS timing excitation grid-connection control mode is used, a GPS time service timer controls an excitation grid-connection control system which controls a wind-collect system and a vertical type generator excitation control system respectively, and a patulous angle of a wind-collect plate is controlled so that supply air rate of a wind power generator, generator speed and amplitude frequency and phase of voltage waveform output by the generator are adjusted. The high-altitude tower embedded type vertical type wind power generation system is small in size, easy to mount and repair, stable in operation performance, high in anti-storm ability, good in power-generation quality and performance, suitable for a high-altitude signal-radiation tower, a high voltage transmission tower and other high-altitude frames which can be used as frames for a vertical wind power generator and fit for power-generation and application in various climates and geographical conditions.

The invention discloses a method for designing the change pole of a rotor in a salient pole synchronous generator, belonging to a method for designing the structure of the rotor in the salient pole synchronous generator, and solving the problem of the unequal size and width of a magnetic pole; the complex connection of a rotor winding, and low use ratio of material or space. The method comprises the steps of: confirming a pre-change pole pair number P1 and a post-change pole pair number P2, and selecting a dense intensive slot ratio K to ensure a virtual rotor slot number Z; preparing a slot number phase diagram; selecting a primary magnetic pole array and a corresponding movable array, and dividing slot number groups; and replacing an edge slot number of a primary magnetic pole array slot number group with adjoining slot numbers in the movable array to obtain a primary change pole project and carry out harmonic analysis to ensure an official change pole project. The method analyzes a salient pole rotor as a multi-slot non salient pole rotor, removes and selects proper slots therefrom to lead the official change pole project to still have the invariable structure of the salient pole, equalizes the size and the width of the magnetic pole, has high conductor use ratio and low harmonic content, and realizes the three-slip ring switch change pole without needing to abandon any magnetic poles.

The invention discloses a ring winding dual-rotor permanent-magnet synchronous motor with an electromagnetic linkage device, and belongs to the technical field of the motor. The technical problems solved by the invention are as follows: the motor operation efficiency is low, the internal-external gap flux density matching is bad, the output torque is low, and the speed control performance is bad.An internal rotor and an external rotor are permanent-magnet structure, a stator adopts the ring winding, a shaft sleeve is rotatably sleeved on a motor shaft, the right end of the motor shaft piercesthe shaft sleeve, the internal rotor is fixedly sleeved on the shaft sleeve, the stator is sleeved on the external of the internal rotor, and the gap is formed between the stator and the intern rotor; the stator is fixedly connected with the motor shaft through a fixed bracket, the external rotor is sleeved on the external of the stator, and the gap is formed between the external rotor and the stator; the left end of the external rotor is connected with the shaft sleeve through a first flange plate and a first bearing, and the right end of the external rotor is connected with the motor shaftthrough a second flange plate and a second bearing; the permanent magnet synchronous motor further comprises an electromagnetic linkage device, and the internal rotor and the external rotor realize the synthetic rotation through the electromagnetic linkage device. The ring winding dual-rotor permanent-magnet synchronous motor disclosed by the invention can be applied to a hybrid power vehicle driving system.

The invention discloses an oil internal-cooling high-power density hub permanent magnet motor for an electric vehicle, which comprises a shaft. A front end cover and a rear end cover are respectively sleeved at the front and rear ends of the shaft; the front end cover and the rear end cover are respectively connected with the shaft by bearings; an outer rotor sleeve is fixedly connected between the front and rear end covers; a surface-mount magnetic steel is adhered inside the outer rotor sleeve; a stator bracket fixedly connected with the shaft is arranged between the front and rear end covers; a stator adopting a fractional-slot winding structure is arranged on the stator bracket; an oil charging hole is arranged on the front end cover; the contact position of the front end cover and the shaft is sealed in a labyrinth mode; and the contact positions of the front and rear end covers and the outer rotor sleeve, the contact position of the oil charging hole and a stopper and the contact position of the rear end cover and the shaft are sealed by rubber rings. According to the hub permanent magnet motor adopting the outer rotor structure, a great of transmission parts are saved, the vehicle has simpler structure and various complex driving modes can be implemented.

The invention discloses a fault-tolerant control method for open circuit faults of a switched reluctance motor, and the method is realized through a three-phase four-leg switched reluctance motor fault-tolerant control system. The three-phase four-bridge-arm switched reluctance motor fault-tolerant control system comprises a three-phase switched reluctance motor, a direct-current power supply and a four-bridge-arm inverter, a winding adopts a star-shaped connection mode, a neutral point of the winding is connected with a fourth bridge arm, and the three-phase four-bridge-arm switched reluctance motor fault-tolerant control system is used for solving the problem that a power conversion device has an open-circuit fault when a switched reluctance motor driving circuit works. Fault-tolerant control can be carried out on open circuit of a single switch tube, fault-tolerant control can be carried out on open circuit of any two tubes which are not on the same bridge arm, it is guaranteed that the performance of a motor system is basically unchanged compared with normal operation, and the fault-tolerant control circuit is simple in circuit wiring, low in cost, and high in winding utilization rate. The fault-tolerant operation of the power converter after the open-circuit fault is effectively realized, and the reliability of the system is improved.

The invention discloses a four-phase sine wave electro-magnetic doubly salient motor which comprises a stator iron core and a rotor iron core which share the same rotating shaft. The motor is of an 8N/6N pole structure, wherein a stator and a rotor of the motor are both of a salient pole tooth groove structure, the pole arc coefficient of the rotor is 0.5, and the pole arc length of the stator isequal to or slightly larger than half of the pole arc length of the rotor. An armature winding and an exciting winding are embedded in the stator slot; an armature coil is wound on each stator pole, each magnet exciting coil is wound across the four stator poles, windings with different distribution positions and phase differences of 180 degrees in the armature coils are combined, and four-phase windings with the same flux linkage change rate of each phase are formed through reverse series connection, so that four-phase counter electromotive force symmetry is realized. The rotor is of a five-section stepped structure or a skewed pole structure, and the skewed pole number is the difference between the rotor pole angle and the stator pole angle; and the rotor pole is chamfered to improve thesine degree of the counter electromotive force of the motor. In the rotating process of the motor, the rotor induces sinusoidal winding counter electromotive force waveforms in the stator armature windings of the turn chain, the problem that square wave control torque pulsation of a traditional electrically excited doubly salient motor is large is effectively solved, four phases can be powered onand work at the same time, the winding utilization rate of the motor is increased, and the fault tolerance performance of the motor is good.

The invention provides an electric-refrigeration-chip-based dynamic-magnetic-steel magnetic levitation dual-stage vector arc switching method and device and belongs to the technical field of semiconductor manufacture equipment. The electric-refrigeration-chip-based dynamic-magnetic-steel magnetic levitation dual-stage vector arc switching device comprises a support framework, a balancing mass block, magnetic levitation stages, a stage measurement device and a stage driving device, wherein the two stages work between a measurement site and an exposure site; the positions of the stages are measured by interferometers; a passive compensation structure formed by both a planar leaf spring and an electromagnetic damper is adopted for motion compensation for the balancing mass block; the stages are driven by a dynamic-magnetic-steel magnetic levitation planar motor of an electric-refrigeration-chip structure; in the switching process of the two stages, the planar motor drives the two stages to achieve quick single-beat arc switching. The invention solves the problem that a conventional switching scheme is more in beat, long in track, more in start and stop process, long in stabilizing time and the like, the switching processes are reduced, the switching time is shortened, and the productivity of a lithography machine is improved.

The invention relates to a power generation windmill group, belonging to the technical field of generating sets. The power generation windmill group comprises a main shaft, vanes, vane sleeve shafts, a supervoltage sensor, a connector for a phase converter at the root parts of the vanes, a power transmission gear, a fan cover, vane groups with diverse directions. The power generation windmill group is characterized in that the diameters of the vanes of the windmill can be designed to be from large to small, or be equal to one another, or be small to large; a plurality of vane groups are connected in series on the same shaft, and the forced directions of the vanes are mutually reversed. When wind passes through the first vane group, and the second vane group is blown to rotate by the rest energy to do work, and so on. When the wind force exceeds a preset insurance value, the supervoltage sensor automatically causes the vanes to rotate, surfaces contacting the wind become smaller and smaller until being smallest, and the direction is not changed, thereby playing the function of protecting equipment and increasing the power generation efficiency.

The invention discloses a dual-rotor axial flux block structure switched reluctance motor. The dual-rotor axial flux block structure switched reluctance motor comprises a stator(1), a left rotor(2), aright rotor(3), an exciting winding(4), rotor end covers(5), bearings(6) and a hollow support tube(7); the stator(1) comprises an exciting pole(1-1), an external magnetic conduction ring(1-2), an internal magnetic conduction ring(1-3), an exciting pole support piece(1-4) and a stator support piece(1-5); the left rotor(2) comprises a left rotor block iron core(2-1) and a left rotor support piece(2-2); and the right rotor(3) comprises a right rotor block iron core(3-1) and a right rotor support piece(3-2). The dual-rotor axial flux block structure switched reluctance motor disclosed by the invention adopts a centralized winding form; on the one hand, the utilization ratio of the motor winding is improved, and on the other hand, the end effect of the motor is weakened; therefore, the reliability of the motor is improved; furthermore, the adopted block stator structure and rotor support piece with smooth surface are also helpful to restrain the wind-friction loss of the motor and improvethe efficiency of the motor.

The invention discloses acounter electromotive force space vector-oriented instantaneous torque control method for a brushless direct current motor. The method comprises the steps of establishing a d-q rotating coordinate system which is orientated based on counter electromotive force; and deducing a torque computation formula under the d-q rotating coordinate system, thus proving that the actual torque Teof the motor is directly proportional to q-axis current. A, B and C three-phase current set values can be worked out through the given d-axis and q-axis current values, and the utilization rate of the winding is improved by using a three-phase breakover PWM modulation strategy applicable to the brushless direct current motor. As the control method adopts the three-phase breakover control mode, no commutation torque ripple occurs. The control mode is used during the whole operation period, separate division of a commutation region for control is not needed, the computation is simplified, and the implementation is simpler.

The invention provides high-efficiency high-power vertical axis wind power generation equipment for a ship. The equipment comprises a power generation device, a movable rod, an electric cylinder, a base, a blade, U-shaped holes, connecting blocks, a handle rod, a U-shaped groove 1, a support rod 1, a support rod 2 and a U-shaped groove 2; the lower end of the movable rod penetrates through the base to connect with the electric cylinder, and the upper end of the movable rod is fixed in the middle position of the lower end surface of the power generation device; the handle rod is arranged at the lower end of the support rod 2; the support rod 1 is mounted at the lower end of the handle rod; two connecting blocks are symmetrically mounted on the right end surface of the blade; the U-shaped holes are formed in the connecting blocks; the two connecting blocks are respectively assembled with the U-shaped groove 1 and the U-shaped groove 2; the U-shaped groove 1 and the U-shaped groove 2 are connected with the U-shaped holes through pins; and the support rod 1 is connected with the support rod 2 through the handle rod. The equipment is convenient for use and operation, increases the wind power utilization rate, can adjust the unfolding size, and is excellent in stability and high in reliability.

The invention discloses a floating type combined wind generator set. The floating type combined wind generator set comprises a plurality of central floating bodies and a plurality of wind generator set bodies; tower barrels are fixedly connected to the upper surfaces of the central floating bodies; the wind generator set bodies are mounted on the top parts of the tower barrels; a supporting floating body is fixedly connected between every two adjacent central floating bodies; the supporting floating bodies comprise a plurality of sections which are connected through universal joints. According to the floating type combined wind generator set, the plurality of generator sets can be synchronously operated through a combined floating body, and thus the utilization rate of wind power is raised; in addition, the universal joints are arranged, the mutual influence of units composed of the central floating bodies and the generator sets is small, and thus the stable running of the generator sets can be ensured; compared with signal generator set, the floating type combined tidal power generator set is as a whole and has the advantages of being stable, and convenient to transport, mount and construct.

The invention provides a vertical-axis wind-driven generator and belongs to the technical field of wind power generation. The vertical-axis wind-driven generator comprises a base, a generator body arranged in the base, a stand column arranged on the upper side of the base and blade assemblies. A round disk is arranged at the center of the top of the stand column. A plurality of connection rods arearranged around the center of the round disk and penetrate through the round disk. Each blade assembly is in an arc curved face and comprises an upper blade, a lower blade and a connection portion, wherein the upper end and the lower end of the connection portion are fixedly connected with the upper blade and the lower blade correspondingly, the end, far away from the connection portion, of the upper blade and the end, far away from the connection portion, of the lower blade are provided with an upper sliding block and a lower sliding block correspondingly, the upper sliding block and the lower sliding block are connected with the upper end and the lower end of the corresponding connection rod in a sliding manner, and the upper sliding block and the lower sliding block are fixedly connected with the connection portion through soft elastic rubber pieces. The vertical-axis wind-driven generator is simple in structure, convenient to use and capable of reducing the air resistance and resisting strong wind force, the efficiency of the vertical-axis wind-driven generator is improved, and the service life of the vertical-axis wind-driven generator can be prolonged.

The invention discloses a high-thrust modularized permanent magnet linear synchronous motor. A stator mechanism is provided with a plurality of stator modules which are arranged in a linear mode, and each stator module is provided with a magnetic conductive block and a conductive coil arranged on the magnetic conductive block in a sleeving mode. A mover mechanism is provided with two first mover modules and a second mover module, and each first mover module is provided with a first magnetic conductive plate movably arranged beside one long edge side of the stator mechanism and a plurality of first permanent magnets arranged on one side of the first magnetic conductive plate. The second mover module is provided with a second magnetic conductive plate movably arranged above the stator mechanism and a plurality of second permanent magnets arranged on the lower side surface of the second magnetic conductive plate; when the conductive coil is connected with an external power supply, the two first mover modules and the second mover module can move together along the length direction of the stator mechanism. According to the permanent magnet linear synchronous motor, the high thrust function is realized, the manufacturing cost is reduced, the size of the motor is reduced, and the permanent magnet linear synchronous motor can be well applied to automatic equipment or high thrust motion occasions.

The invention provides a water collecting plate and an indoor unit of an air conditioner. The water collecting plate comprises air guide surfaces. The air guide surfaces are positioned on the sides of a bottom surface of the water collecting plate. The water collecting plate and the indoor unit have the advantages that the air utilization rate is increased, accordingly, the heat exchange efficiency of an evaporator is improved, and noise of a unit is reduced; a water pump compression structure used for installing a water pump is arranged on the bottom surface of the water collecting plate, so that the water pump can be selectively installed on the unit, and after-sales installation is facilitated; a drain outlet compression structure used for being connected with a drain pipe is arranged on the bottom surface of the water collecting plate, and the bottom of the drain outlet compression structure is positioned on the lower side of a main plane of the bottom surface of the water collecting plate, so that the water outlet height can be effectively reduced, and water is prevented from spilling due to excessive water height; a heat exchanger side board can be effectively supported by the bottom surface of the water collecting plate, the evaporator can be effectively fixed, the quality of a product is improved, the product is multifunctional, a heat exchanger can be effectively supported, and production and installation are facilitated.

The invention provides a wind power generation device and method and relates to the technical field of wind power generation. By means of the wind power generation device, a pressure control valve isused for supplying stable air pressure to a turbine so that the turbine can work stably, the power generation voltage is stable, and the power generation voltage can be merged into the national grid or directly supplied to users without any treatment. Meanwhile, the wind power utilization rate of a wind wheel is increased compared with that of an existing conventional wind wheel, the wind speed limitation is avoided, and normal work can be done when the wind speed reaches to the second level or the tenth level. In addition, power generation equipment and a transformer are transferred to the ground surface from the air, a shielding case is used for insulating electromagnetic radiation and electromagnetic signal interference, the normal life of local residents and peripheral animals is prevented from being affected, and communication equipment is prevented from being interfered by electromagnetism.

Embodiments of the invention disclose a magnetic levitation switch reluctance flywheel motor and a decoupling control method. The magnetic levitation switch reluctance flywheel motor comprises an outer rotor iron core (1) and a stator iron core (4), wherein the outer rotor iron core (1) and the stator iron core (4) are nested in sequence in a concentric manner; the outer rotor iron core (1) comprises a salient pole rotor (2) and a cylindrical rotor (3) in an axial recombination manner; eight rotor salient poles are arranged on the inner wall of the salient pole rotor (2) at equal intervals; each rotor salient pole has no winding; twelve stator salient poles (5) are arranged on the outer wall of the stator iron core (4) at equal intervals; and each stator salient pole is wound by a set of stator windings (6). By adoption of the embodiments of the magnetic levitation switch reluctance flywheel motor and the decoupling control method, the decoupling control on an electric/power generation function and a radial levitation function can be realized; the flywheel rotor strength can be enhanced; the size of the overall machine can be reduced; the dynamic characteristics and the stability of the system are improved; and the high-adaptivity characteristic of the magnetic levitation switch reluctance flywheel motor is further performed.

A resultant-force wind power generation device with an energy storage function overcomes the shortcomings that a single windmill is small in force and the power generation force cannot be integrated easily. According to the adopted scheme, the device comprises a group of windmills, a transmission device, an energy storage device and a generator set; the group of windmills rotate windward to simultaneously drive the transmission device and the generator and store the energy in an energy storage device; when the windward rotating power of the windmills is insufficient, the energy storage device drives the transmission device to rotate continually or assists the transmission device in rotation. The resultant-force wind power generation device has the benefits that the group of windmills have a large resultant force in driving the generator and can be optionally combined according to different wind field situations, so that manoeuvrability and flexibility are achieved, the wind power utilization ratio and conversion efficiency are high, the wind energy can be stored and released and converted into continuous output kinetic energy, and accordingly, the generator is enabled to rotate continually.